| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a power supply shut-off device of a vehicle, stably shutting off a power supply of an electric functional component. <P>SOLUTION: In a construction machine and a vehicle driven by an engine, this power supply shut-off device of the vehicle includes: the power supply; the electric functional component connected to the power supply to function; a key switch for managing the power supply; and a main relay for applying or interrupting the power supply to the electric functional component according to the state of the key switch. The power supply shut-off device further includes: an operation sensing means; a control relay provided between the key switch and the main relay to apply a key switch signal to a driving part of the main relay when electricity is not applied to the driving part, and interrupt the key switch signal to the driving part of the main relay when electricity is applied to the driving part; and a controller which receives input of an operation signal from the operation sensing means and drives the control relay to shut off the power supply when the operation signal is not input during predetermined time. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
